A tube coupling nut with the shank end accommodating a smaller tube size than is accommodated by the tube fitting which connects to the threaded end.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5990-00-079-2903
NSN 5835-01-412-5325
NSN 6610-01-192-6478
NSN 6220-01-112-2343
NSN 4140-01-383-4738
NSN 2925-00-211-4469
NSN 5935-00-555-6945
NSN 6685-01-350-0019
NSN 5960-00-808-6057
NSN 6220-01-344-0909
NSN 5905-00-124-7339
NSN 5935-01-306-7513